Thomas Dunne Books told The Associated Press on Thursday it will publish Sanders' "Our Revolution: A Future to Believe In"

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Sen. Bernie Sanders (I-VT) speaks to campaign volunteers during an event at Five Sullivan Brothers Convention Center Jan. 31, 2016, in Waterloo, Iowa. Sanders' book is scheduled to come out Nov. 15, a week after election day.

Just days after ending his campaign and endorsing Hillary Clinton for president, Sen. Bernie Sanders is preparing to take his message to the printed page.

Thomas Dunne Books told The Associated Press on Thursday it will publish Sanders' "Our Revolution: A Future to Believe In." The book is scheduled to come out Nov. 15, a week after election day, and will include both his policy ideas for the future and reflections on his surprisingly strong run in the primaries.

The 74-year-old Sanders, an independent from Vermont who caucuses with Democrats in the Senate, attracted millions of voters with his blunt rhetoric and progressive agenda of raising taxes on the rich, overhauling campaign financing and providing universal health care and free college education.

"Bernie Sanders quickly became the leader of the progressive movement within the Democratic Party," Dunne said in a statement. "Garnering over 13 million votes, winning 23 primaries and caucuses, and receiving more than 7 million individual donations to his cause, he energized the party as he fought for the average American with unrelenting energy and passion. (The book) will be an inside account of this extraordinary campaign, and will also provide a blueprint for future political action. Its message: the fight has just begun."

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Books on presidential campaigns are an established publishing genre, but it's unusual for a candidate to reach a deal so soon after the race and to have the book come out soon after the election. Financial details weren't disclosed and the publisher didn't immediately say who initiated the idea for the book, how long it's been planned, whether Sanders will have a co-writer or whether he's begun working on a manuscript.

The book could well offer a critical take on Clinton, as Sanders often challenged her on her ties to Wall Street and questioned her willingness to take on wealthy special interests. It's not uncommon for copies of a book to leak a week or more before the release date, raising the possibility that any negative comments on Clinton could be seen before Election Day.